./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/heap-manipulation/sll_to_dll_rev-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c4f91361 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/heap-manipulation/sll_to_dll_rev-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8f9453cad2383b5119b308e041fed5f4a740e7abd43cb8ad7833872af20a8d57 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-c4f9136-m [2023-11-23 15:32:26,742 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 15:32:26,825 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-23 15:32:26,843 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 15:32:26,847 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 15:32:26,869 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 15:32:26,870 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 15:32:26,870 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 15:32:26,871 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 15:32:26,875 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 15:32:26,875 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 15:32:26,876 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 15:32:26,876 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 15:32:26,878 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 15:32:26,878 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 15:32:26,878 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 15:32:26,878 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 15:32:26,879 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 15:32:26,879 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 15:32:26,879 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 15:32:26,879 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-23 15:32:26,880 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 15:32:26,880 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 15:32:26,880 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 15:32:26,881 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 15:32:26,881 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 15:32:26,882 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 15:32:26,882 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 15:32:26,882 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 15:32:26,882 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 15:32:26,883 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 15:32:26,884 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 15:32:26,884 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 15:32:26,884 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 15:32:26,884 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 15:32:26,884 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 15:32:26,885 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 15:32:26,885 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 15:32:26,885 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 15:32:26,885 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f9453cad2383b5119b308e041fed5f4a740e7abd43cb8ad7833872af20a8d57 [2023-11-23 15:32:27,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 15:32:27,145 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 15:32:27,149 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 15:32:27,150 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 15:32:27,151 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 15:32:27,152 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/sll_to_dll_rev-2.i [2023-11-23 15:32:28,347 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 15:32:28,567 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 15:32:28,568 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/heap-manipulation/sll_to_dll_rev-2.i [2023-11-23 15:32:28,579 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5359e0d3f/1d5575723afb475597b9748e01b9e3ad/FLAG7742ec88d [2023-11-23 15:32:28,592 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5359e0d3f/1d5575723afb475597b9748e01b9e3ad [2023-11-23 15:32:28,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 15:32:28,595 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 15:32:28,596 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 15:32:28,597 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 15:32:28,608 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 15:32:28,610 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:32:28" (1/1) ... [2023-11-23 15:32:28,611 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c93fff9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:28, skipping insertion in model container [2023-11-23 15:32:28,612 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:32:28" (1/1) ... [2023-11-23 15:32:28,654 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 15:32:28,938 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 15:32:28,950 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 15:32:28,999 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 15:32:29,035 INFO L206 MainTranslator]: Completed translation [2023-11-23 15:32:29,036 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:29 WrapperNode [2023-11-23 15:32:29,036 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 15:32:29,037 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 15:32:29,037 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 15:32:29,038 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 15:32:29,045 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:29" (1/1) ... [2023-11-23 15:32:29,059 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:29" (1/1) ... [2023-11-23 15:32:29,095 INFO L138 Inliner]: procedures = 129, calls = 80, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 215 [2023-11-23 15:32:29,096 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 15:32:29,097 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 15:32:29,097 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 15:32:29,097 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 15:32:29,107 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:29" (1/1) ... [2023-11-23 15:32:29,107 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:29" (1/1) ... [2023-11-23 15:32:29,112 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:29" (1/1) ... [2023-11-23 15:32:29,112 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:29" (1/1) ... [2023-11-23 15:32:29,121 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:29" (1/1) ... [2023-11-23 15:32:29,138 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:29" (1/1) ... [2023-11-23 15:32:29,147 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:29" (1/1) ... [2023-11-23 15:32:29,152 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:29" (1/1) ... [2023-11-23 15:32:29,155 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 15:32:29,162 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 15:32:29,162 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 15:32:29,162 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 15:32:29,163 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:29" (1/1) ... [2023-11-23 15:32:29,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 15:32:29,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:32:29,206 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 15:32:29,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 15:32:29,246 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2023-11-23 15:32:29,247 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2023-11-23 15:32:29,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 15:32:29,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 15:32:29,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 15:32:29,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 15:32:29,249 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 15:32:29,249 INFO L130 BoogieDeclarations]: Found specification of procedure check_seq_prev [2023-11-23 15:32:29,249 INFO L138 BoogieDeclarations]: Found implementation of procedure check_seq_prev [2023-11-23 15:32:29,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 15:32:29,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 15:32:29,249 INFO L130 BoogieDeclarations]: Found specification of procedure chain_node [2023-11-23 15:32:29,250 INFO L138 BoogieDeclarations]: Found implementation of procedure chain_node [2023-11-23 15:32:29,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 15:32:29,250 INFO L130 BoogieDeclarations]: Found specification of procedure check_seq_next [2023-11-23 15:32:29,250 INFO L138 BoogieDeclarations]: Found implementation of procedure check_seq_next [2023-11-23 15:32:29,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 15:32:29,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 15:32:29,397 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 15:32:29,399 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 15:32:29,809 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 15:32:29,892 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 15:32:29,893 INFO L309 CfgBuilder]: Removed 33 assume(true) statements. [2023-11-23 15:32:29,893 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:32:29 BoogieIcfgContainer [2023-11-23 15:32:29,893 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 15:32:29,895 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 15:32:29,895 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 15:32:29,899 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 15:32:29,899 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:32:28" (1/3) ... [2023-11-23 15:32:29,900 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@536accc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:32:29, skipping insertion in model container [2023-11-23 15:32:29,900 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:29" (2/3) ... [2023-11-23 15:32:29,900 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@536accc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:32:29, skipping insertion in model container [2023-11-23 15:32:29,900 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:32:29" (3/3) ... [2023-11-23 15:32:29,902 INFO L112 eAbstractionObserver]: Analyzing ICFG sll_to_dll_rev-2.i [2023-11-23 15:32:29,919 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 15:32:29,920 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 83 error locations. [2023-11-23 15:32:29,981 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 15:32:29,988 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5d9d3c20, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 15:32:29,988 INFO L358 AbstractCegarLoop]: Starting to check reachability of 83 error locations. [2023-11-23 15:32:29,994 INFO L276 IsEmpty]: Start isEmpty. Operand has 204 states, 102 states have (on average 2.303921568627451) internal successors, (235), 190 states have internal predecessors, (235), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-23 15:32:30,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-23 15:32:30,001 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:32:30,001 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-23 15:32:30,002 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2023-11-23 15:32:30,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:32:30,009 INFO L85 PathProgramCache]: Analyzing trace with hash 555935, now seen corresponding path program 1 times [2023-11-23 15:32:30,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:32:30,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118975496] [2023-11-23 15:32:30,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:32:30,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:32:30,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:32:30,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 15:32:30,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:32:30,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118975496] [2023-11-23 15:32:30,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118975496] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:32:30,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:32:30,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 15:32:30,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069210678] [2023-11-23 15:32:30,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:32:30,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 15:32:30,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:32:30,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 15:32:30,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 15:32:30,253 INFO L87 Difference]: Start difference. First operand has 204 states, 102 states have (on average 2.303921568627451) internal successors, (235), 190 states have internal predecessors, (235), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 15:32:30,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:32:30,351 INFO L93 Difference]: Finished difference Result 201 states and 222 transitions. [2023-11-23 15:32:30,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 15:32:30,354 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-23 15:32:30,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:32:30,365 INFO L225 Difference]: With dead ends: 201 [2023-11-23 15:32:30,366 INFO L226 Difference]: Without dead ends: 200 [2023-11-23 15:32:30,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 15:32:30,372 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 15:32:30,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 202 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 15:32:30,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2023-11-23 15:32:30,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2023-11-23 15:32:30,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 97 states have (on average 2.0103092783505154) internal successors, (195), 186 states have internal predecessors, (195), 17 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-23 15:32:30,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 221 transitions. [2023-11-23 15:32:30,436 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 221 transitions. Word has length 3 [2023-11-23 15:32:30,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:32:30,437 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 221 transitions. [2023-11-23 15:32:30,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 15:32:30,437 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 221 transitions. [2023-11-23 15:32:30,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-23 15:32:30,438 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:32:30,438 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-23 15:32:30,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 15:32:30,438 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting chain_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2023-11-23 15:32:30,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:32:30,439 INFO L85 PathProgramCache]: Analyzing trace with hash 543271813, now seen corresponding path program 1 times [2023-11-23 15:32:30,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:32:30,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194215184] [2023-11-23 15:32:30,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:32:30,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:32:30,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:32:30,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 15:32:30,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:32:30,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194215184] [2023-11-23 15:32:30,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194215184] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:32:30,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:32:30,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 15:32:30,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125328003] [2023-11-23 15:32:30,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:32:30,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 15:32:30,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:32:30,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 15:32:30,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 15:32:30,582 INFO L87 Difference]: Start difference. First operand 200 states and 221 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 15:32:30,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:32:30,743 INFO L93 Difference]: Finished difference Result 198 states and 219 transitions. [2023-11-23 15:32:30,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 15:32:30,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-23 15:32:30,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:32:30,748 INFO L225 Difference]: With dead ends: 198 [2023-11-23 15:32:30,748 INFO L226 Difference]: Without dead ends: 198 [2023-11-23 15:32:30,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 15:32:30,755 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 3 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 15:32:30,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 330 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 15:32:30,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2023-11-23 15:32:30,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2023-11-23 15:32:30,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 97 states have (on average 1.9896907216494846) internal successors, (193), 184 states have internal predecessors, (193), 17 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-23 15:32:30,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 219 transitions. [2023-11-23 15:32:30,781 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 219 transitions. Word has length 5 [2023-11-23 15:32:30,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:32:30,781 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 219 transitions. [2023-11-23 15:32:30,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 15:32:30,781 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 219 transitions. [2023-11-23 15:32:30,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-23 15:32:30,782 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:32:30,782 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-23 15:32:30,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 15:32:30,782 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting chain_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2023-11-23 15:32:30,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:32:30,783 INFO L85 PathProgramCache]: Analyzing trace with hash 543271814, now seen corresponding path program 1 times [2023-11-23 15:32:30,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:32:30,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883569497] [2023-11-23 15:32:30,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:32:30,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:32:30,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:32:30,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 15:32:30,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:32:30,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883569497] [2023-11-23 15:32:30,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883569497] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:32:30,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:32:30,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 15:32:30,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909048979] [2023-11-23 15:32:30,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:32:30,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 15:32:30,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:32:30,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 15:32:30,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 15:32:30,898 INFO L87 Difference]: Start difference. First operand 198 states and 219 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 15:32:31,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:32:31,016 INFO L93 Difference]: Finished difference Result 196 states and 217 transitions. [2023-11-23 15:32:31,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 15:32:31,020 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-23 15:32:31,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:32:31,021 INFO L225 Difference]: With dead ends: 196 [2023-11-23 15:32:31,022 INFO L226 Difference]: Without dead ends: 196 [2023-11-23 15:32:31,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 15:32:31,023 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 1 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 15:32:31,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 334 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 15:32:31,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2023-11-23 15:32:31,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2023-11-23 15:32:31,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 97 states have (on average 1.9690721649484537) internal successors, (191), 182 states have internal predecessors, (191), 17 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-23 15:32:31,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 217 transitions. [2023-11-23 15:32:31,036 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 217 transitions. Word has length 5 [2023-11-23 15:32:31,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:32:31,036 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 217 transitions. [2023-11-23 15:32:31,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 15:32:31,037 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 217 transitions. [2023-11-23 15:32:31,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-23 15:32:31,037 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:32:31,037 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:32:31,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 15:32:31,038 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting chain_nodeErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2023-11-23 15:32:31,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:32:31,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1901782211, now seen corresponding path program 1 times [2023-11-23 15:32:31,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:32:31,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245807610] [2023-11-23 15:32:31,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:32:31,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:32:31,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:32:31,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 15:32:31,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:32:31,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245807610] [2023-11-23 15:32:31,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245807610] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:32:31,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:32:31,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 15:32:31,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409311283] [2023-11-23 15:32:31,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:32:31,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 15:32:31,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:32:31,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 15:32:31,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 15:32:31,225 INFO L87 Difference]: Start difference. First operand 196 states and 217 transitions. Second operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 15:32:31,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:32:31,423 INFO L93 Difference]: Finished difference Result 191 states and 212 transitions. [2023-11-23 15:32:31,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 15:32:31,423 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-23 15:32:31,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:32:31,424 INFO L225 Difference]: With dead ends: 191 [2023-11-23 15:32:31,424 INFO L226 Difference]: Without dead ends: 191 [2023-11-23 15:32:31,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:32:31,434 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 45 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 15:32:31,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 534 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 15:32:31,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2023-11-23 15:32:31,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2023-11-23 15:32:31,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 97 states have (on average 1.9175257731958764) internal successors, (186), 177 states have internal predecessors, (186), 17 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-23 15:32:31,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 212 transitions. [2023-11-23 15:32:31,451 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 212 transitions. Word has length 7 [2023-11-23 15:32:31,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:32:31,454 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 212 transitions. [2023-11-23 15:32:31,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 15:32:31,455 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 212 transitions. [2023-11-23 15:32:31,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-23 15:32:31,455 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:32:31,455 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:32:31,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 15:32:31,456 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting chain_nodeErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2023-11-23 15:32:31,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:32:31,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1901782210, now seen corresponding path program 1 times [2023-11-23 15:32:31,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:32:31,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814156801] [2023-11-23 15:32:31,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:32:31,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:32:31,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:32:31,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 15:32:31,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:32:31,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814156801] [2023-11-23 15:32:31,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814156801] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:32:31,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:32:31,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 15:32:31,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727684760] [2023-11-23 15:32:31,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:32:31,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 15:32:31,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:32:31,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 15:32:31,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 15:32:31,717 INFO L87 Difference]: Start difference. First operand 191 states and 212 transitions. Second operand has 5 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 15:32:31,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:32:31,921 INFO L93 Difference]: Finished difference Result 186 states and 207 transitions. [2023-11-23 15:32:31,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 15:32:31,921 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-23 15:32:31,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:32:31,922 INFO L225 Difference]: With dead ends: 186 [2023-11-23 15:32:31,922 INFO L226 Difference]: Without dead ends: 186 [2023-11-23 15:32:31,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 15:32:31,923 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 30 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 15:32:31,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 546 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 15:32:31,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2023-11-23 15:32:31,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2023-11-23 15:32:31,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 97 states have (on average 1.865979381443299) internal successors, (181), 172 states have internal predecessors, (181), 17 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-23 15:32:31,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 207 transitions. [2023-11-23 15:32:31,939 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 207 transitions. Word has length 7 [2023-11-23 15:32:31,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:32:31,939 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 207 transitions. [2023-11-23 15:32:31,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 15:32:31,940 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 207 transitions. [2023-11-23 15:32:31,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 15:32:31,940 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:32:31,940 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:32:31,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 15:32:31,941 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting chain_nodeErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2023-11-23 15:32:31,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:32:31,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1174293745, now seen corresponding path program 1 times [2023-11-23 15:32:31,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:32:31,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671800792] [2023-11-23 15:32:31,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:32:31,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:32:31,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:32:31,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 15:32:31,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:32:31,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671800792] [2023-11-23 15:32:31,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671800792] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:32:31,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:32:31,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 15:32:31,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534816914] [2023-11-23 15:32:31,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:32:31,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 15:32:32,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:32:32,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 15:32:32,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 15:32:32,004 INFO L87 Difference]: Start difference. First operand 186 states and 207 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 15:32:32,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:32:32,144 INFO L93 Difference]: Finished difference Result 185 states and 206 transitions. [2023-11-23 15:32:32,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 15:32:32,145 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-23 15:32:32,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:32:32,147 INFO L225 Difference]: With dead ends: 185 [2023-11-23 15:32:32,147 INFO L226 Difference]: Without dead ends: 185 [2023-11-23 15:32:32,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 15:32:32,151 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 4 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 15:32:32,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 433 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 15:32:32,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2023-11-23 15:32:32,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2023-11-23 15:32:32,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 97 states have (on average 1.8556701030927836) internal successors, (180), 171 states have internal predecessors, (180), 17 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-23 15:32:32,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 206 transitions. [2023-11-23 15:32:32,156 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 206 transitions. Word has length 8 [2023-11-23 15:32:32,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:32:32,157 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 206 transitions. [2023-11-23 15:32:32,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 15:32:32,157 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 206 transitions. [2023-11-23 15:32:32,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 15:32:32,157 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:32:32,157 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:32:32,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 15:32:32,158 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting chain_nodeErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2023-11-23 15:32:32,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:32:32,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1174293746, now seen corresponding path program 1 times [2023-11-23 15:32:32,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:32:32,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696558772] [2023-11-23 15:32:32,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:32:32,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:32:32,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:32:32,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 15:32:32,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:32:32,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696558772] [2023-11-23 15:32:32,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696558772] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:32:32,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:32:32,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 15:32:32,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317420983] [2023-11-23 15:32:32,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:32:32,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 15:32:32,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:32:32,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 15:32:32,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 15:32:32,261 INFO L87 Difference]: Start difference. First operand 185 states and 206 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 15:32:32,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:32:32,371 INFO L93 Difference]: Finished difference Result 184 states and 205 transitions. [2023-11-23 15:32:32,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 15:32:32,372 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-23 15:32:32,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:32:32,373 INFO L225 Difference]: With dead ends: 184 [2023-11-23 15:32:32,373 INFO L226 Difference]: Without dead ends: 184 [2023-11-23 15:32:32,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 15:32:32,375 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 2 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 15:32:32,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 494 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 15:32:32,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2023-11-23 15:32:32,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2023-11-23 15:32:32,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 97 states have (on average 1.8453608247422681) internal successors, (179), 170 states have internal predecessors, (179), 17 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-23 15:32:32,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 205 transitions. [2023-11-23 15:32:32,380 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 205 transitions. Word has length 8 [2023-11-23 15:32:32,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:32:32,381 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 205 transitions. [2023-11-23 15:32:32,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 15:32:32,381 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 205 transitions. [2023-11-23 15:32:32,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-23 15:32:32,381 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:32:32,382 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:32:32,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 15:32:32,382 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2023-11-23 15:32:32,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:32:32,382 INFO L85 PathProgramCache]: Analyzing trace with hash 967073312, now seen corresponding path program 1 times [2023-11-23 15:32:32,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:32:32,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366059639] [2023-11-23 15:32:32,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:32:32,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:32:32,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:32:32,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:32:32,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:32:32,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 15:32:32,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:32:32,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366059639] [2023-11-23 15:32:32,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366059639] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:32:32,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:32:32,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 15:32:32,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366228897] [2023-11-23 15:32:32,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:32:32,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 15:32:32,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:32:32,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 15:32:32,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:32:32,678 INFO L87 Difference]: Start difference. First operand 184 states and 205 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 15:32:32,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:32:32,989 INFO L93 Difference]: Finished difference Result 183 states and 204 transitions. [2023-11-23 15:32:32,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 15:32:32,989 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2023-11-23 15:32:32,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:32:32,990 INFO L225 Difference]: With dead ends: 183 [2023-11-23 15:32:32,990 INFO L226 Difference]: Without dead ends: 183 [2023-11-23 15:32:32,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:32:32,991 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 116 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 15:32:32,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 265 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 15:32:32,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2023-11-23 15:32:32,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2023-11-23 15:32:32,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 97 states have (on average 1.8350515463917525) internal successors, (178), 169 states have internal predecessors, (178), 17 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-23 15:32:32,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 204 transitions. [2023-11-23 15:32:32,997 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 204 transitions. Word has length 14 [2023-11-23 15:32:32,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:32:32,998 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 204 transitions. [2023-11-23 15:32:32,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 15:32:32,998 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 204 transitions. [2023-11-23 15:32:32,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-23 15:32:32,998 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:32:32,999 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:32:32,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 15:32:32,999 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2023-11-23 15:32:32,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:32:33,000 INFO L85 PathProgramCache]: Analyzing trace with hash 967073313, now seen corresponding path program 1 times [2023-11-23 15:32:33,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:32:33,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639939180] [2023-11-23 15:32:33,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:32:33,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:32:33,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:32:33,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:32:33,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:32:33,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 15:32:33,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:32:33,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639939180] [2023-11-23 15:32:33,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639939180] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:32:33,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:32:33,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 15:32:33,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890724023] [2023-11-23 15:32:33,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:32:33,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 15:32:33,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:32:33,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 15:32:33,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:32:33,257 INFO L87 Difference]: Start difference. First operand 183 states and 204 transitions. Second operand has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 15:32:33,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:32:33,635 INFO L93 Difference]: Finished difference Result 182 states and 203 transitions. [2023-11-23 15:32:33,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 15:32:33,636 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2023-11-23 15:32:33,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:32:33,637 INFO L225 Difference]: With dead ends: 182 [2023-11-23 15:32:33,637 INFO L226 Difference]: Without dead ends: 182 [2023-11-23 15:32:33,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:32:33,639 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 62 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 15:32:33,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 451 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 15:32:33,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2023-11-23 15:32:33,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2023-11-23 15:32:33,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 97 states have (on average 1.824742268041237) internal successors, (177), 168 states have internal predecessors, (177), 17 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-23 15:32:33,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 203 transitions. [2023-11-23 15:32:33,646 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 203 transitions. Word has length 14 [2023-11-23 15:32:33,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:32:33,647 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 203 transitions. [2023-11-23 15:32:33,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 15:32:33,647 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 203 transitions. [2023-11-23 15:32:33,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-23 15:32:33,648 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:32:33,648 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:32:33,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 15:32:33,648 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2023-11-23 15:32:33,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:32:33,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1064203379, now seen corresponding path program 1 times [2023-11-23 15:32:33,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:32:33,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020402800] [2023-11-23 15:32:33,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:32:33,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:32:33,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:32:33,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:32:33,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:32:34,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 15:32:34,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:32:34,113 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 15:32:34,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:32:34,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020402800] [2023-11-23 15:32:34,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020402800] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:32:34,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230566187] [2023-11-23 15:32:34,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:32:34,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:32:34,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:32:34,120 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:32:34,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 15:32:34,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:32:34,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-23 15:32:34,290 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:32:34,357 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-23 15:32:34,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 9 [2023-11-23 15:32:34,385 INFO L349 Elim1Store]: treesize reduction 28, result has 30.0 percent of original size [2023-11-23 15:32:34,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 12 [2023-11-23 15:32:34,426 WARN L876 $PredicateComparison]: unable to prove that (exists ((|chain_node_alloc_node_~ptr~0#1.base| Int)) (= |c_#valid| (store |c_old(#valid)| |chain_node_alloc_node_~ptr~0#1.base| 1))) is different from true [2023-11-23 15:32:34,494 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-11-23 15:32:34,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 25 [2023-11-23 15:32:34,852 INFO L349 Elim1Store]: treesize reduction 50, result has 71.6 percent of original size [2023-11-23 15:32:34,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 44 treesize of output 156 [2023-11-23 15:32:37,642 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-23 15:32:37,642 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 15:32:37,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230566187] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:32:37,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 15:32:37,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 13 [2023-11-23 15:32:37,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678939766] [2023-11-23 15:32:37,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:32:37,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 15:32:37,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:32:37,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 15:32:37,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=140, Unknown=1, NotChecked=24, Total=210 [2023-11-23 15:32:37,645 INFO L87 Difference]: Start difference. First operand 182 states and 203 transitions. Second operand has 8 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 15:32:37,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:32:37,910 INFO L93 Difference]: Finished difference Result 183 states and 206 transitions. [2023-11-23 15:32:37,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 15:32:37,910 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2023-11-23 15:32:37,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:32:37,913 INFO L225 Difference]: With dead ends: 183 [2023-11-23 15:32:37,913 INFO L226 Difference]: Without dead ends: 183 [2023-11-23 15:32:37,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=140, Unknown=1, NotChecked=24, Total=210 [2023-11-23 15:32:37,913 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 54 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 256 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 15:32:37,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 346 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 358 Invalid, 0 Unknown, 256 Unchecked, 0.3s Time] [2023-11-23 15:32:37,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2023-11-23 15:32:37,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 181. [2023-11-23 15:32:37,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 97 states have (on average 1.8144329896907216) internal successors, (176), 167 states have internal predecessors, (176), 17 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-23 15:32:37,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 202 transitions. [2023-11-23 15:32:37,918 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 202 transitions. Word has length 27 [2023-11-23 15:32:37,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:32:37,919 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 202 transitions. [2023-11-23 15:32:37,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 15:32:37,919 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 202 transitions. [2023-11-23 15:32:37,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-23 15:32:37,919 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:32:37,919 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:32:37,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 15:32:38,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-23 15:32:38,120 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2023-11-23 15:32:38,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:32:38,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1064203378, now seen corresponding path program 1 times [2023-11-23 15:32:38,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:32:38,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893121295] [2023-11-23 15:32:38,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:32:38,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:32:38,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:32:38,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:32:38,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:32:38,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 15:32:38,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:32:38,888 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-23 15:32:38,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:32:38,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893121295] [2023-11-23 15:32:38,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893121295] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:32:38,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:32:38,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 15:32:38,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515146974] [2023-11-23 15:32:38,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:32:38,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 15:32:38,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:32:38,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 15:32:38,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-23 15:32:38,891 INFO L87 Difference]: Start difference. First operand 181 states and 202 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 15:32:39,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:32:39,455 INFO L93 Difference]: Finished difference Result 198 states and 228 transitions. [2023-11-23 15:32:39,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 15:32:39,456 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2023-11-23 15:32:39,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:32:39,457 INFO L225 Difference]: With dead ends: 198 [2023-11-23 15:32:39,457 INFO L226 Difference]: Without dead ends: 198 [2023-11-23 15:32:39,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-23 15:32:39,458 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 55 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 15:32:39,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 515 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 15:32:39,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2023-11-23 15:32:39,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 191. [2023-11-23 15:32:39,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 105 states have (on average 1.7714285714285714) internal successors, (186), 175 states have internal predecessors, (186), 19 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-23 15:32:39,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 216 transitions. [2023-11-23 15:32:39,463 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 216 transitions. Word has length 27 [2023-11-23 15:32:39,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:32:39,464 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 216 transitions. [2023-11-23 15:32:39,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 15:32:39,466 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 216 transitions. [2023-11-23 15:32:39,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-23 15:32:39,467 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:32:39,467 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:32:39,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-23 15:32:39,467 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2023-11-23 15:32:39,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:32:39,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1143156912, now seen corresponding path program 1 times [2023-11-23 15:32:39,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:32:39,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799850404] [2023-11-23 15:32:39,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:32:39,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:32:39,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:32:40,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:32:40,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:32:40,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 15:32:40,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:32:40,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 15:32:40,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:32:40,399 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-23 15:32:40,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:32:40,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799850404] [2023-11-23 15:32:40,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799850404] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:32:40,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953892823] [2023-11-23 15:32:40,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:32:40,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:32:40,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:32:40,404 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:32:40,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 15:32:40,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:32:40,585 INFO L262 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-23 15:32:40,590 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:32:40,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:32:40,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:32:40,612 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-23 15:32:40,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 11 [2023-11-23 15:32:40,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2023-11-23 15:32:40,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-23 15:32:40,653 WARN L876 $PredicateComparison]: unable to prove that (exists ((|chain_node_alloc_node_~ptr~0#1.base| Int)) (and (<= (+ 1 |chain_node_alloc_node_~ptr~0#1.base|) |c_#StackHeapBarrier|) (= (store |c_old(#length)| |chain_node_alloc_node_~ptr~0#1.base| (select |c_#length| |chain_node_alloc_node_~ptr~0#1.base|)) |c_#length|))) is different from true [2023-11-23 15:32:40,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:32:40,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-23 15:32:40,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-23 15:32:40,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:32:40,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-23 15:32:40,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-23 15:32:40,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:32:40,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-23 15:32:40,813 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-23 15:32:40,813 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 15:32:40,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953892823] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:32:40,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 15:32:40,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2023-11-23 15:32:40,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069131948] [2023-11-23 15:32:40,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:32:40,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 15:32:40,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:32:40,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 15:32:40,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=119, Unknown=1, NotChecked=22, Total=182 [2023-11-23 15:32:40,815 INFO L87 Difference]: Start difference. First operand 191 states and 216 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 15:32:41,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:32:41,003 INFO L93 Difference]: Finished difference Result 198 states and 227 transitions. [2023-11-23 15:32:41,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 15:32:41,003 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 38 [2023-11-23 15:32:41,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:32:41,007 INFO L225 Difference]: With dead ends: 198 [2023-11-23 15:32:41,007 INFO L226 Difference]: Without dead ends: 198 [2023-11-23 15:32:41,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=119, Unknown=1, NotChecked=22, Total=182 [2023-11-23 15:32:41,008 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 49 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 248 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 15:32:41,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 284 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 239 Invalid, 0 Unknown, 248 Unchecked, 0.2s Time] [2023-11-23 15:32:41,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2023-11-23 15:32:41,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 186. [2023-11-23 15:32:41,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 101 states have (on average 1.7920792079207921) internal successors, (181), 171 states have internal predecessors, (181), 18 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-23 15:32:41,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 209 transitions. [2023-11-23 15:32:41,016 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 209 transitions. Word has length 38 [2023-11-23 15:32:41,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:32:41,016 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 209 transitions. [2023-11-23 15:32:41,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 15:32:41,016 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 209 transitions. [2023-11-23 15:32:41,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-23 15:32:41,021 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:32:41,021 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:32:41,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 15:32:41,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-23 15:32:41,232 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2023-11-23 15:32:41,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:32:41,233 INFO L85 PathProgramCache]: Analyzing trace with hash 63849334, now seen corresponding path program 1 times [2023-11-23 15:32:41,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:32:41,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801007767] [2023-11-23 15:32:41,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:32:41,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:32:41,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:32:41,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:32:41,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:32:41,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 15:32:41,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:32:41,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 15:32:41,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:32:41,972 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-23 15:32:41,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:32:41,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801007767] [2023-11-23 15:32:41,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801007767] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:32:41,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54594800] [2023-11-23 15:32:41,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:32:41,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:32:41,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:32:41,974 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:32:41,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 15:32:42,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:32:42,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 44 conjunts are in the unsatisfiable core [2023-11-23 15:32:42,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:32:42,190 INFO L349 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2023-11-23 15:32:42,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 16 [2023-11-23 15:32:42,230 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-11-23 15:32:42,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 10 [2023-11-23 15:32:42,245 WARN L876 $PredicateComparison]: unable to prove that (exists ((|chain_node_alloc_node_~ptr~0#1.base| Int)) (and (<= (+ 1 |chain_node_alloc_node_~ptr~0#1.base|) |c_#StackHeapBarrier|) (= (store |c_old(#length)| |chain_node_alloc_node_~ptr~0#1.base| (select |c_#length| |chain_node_alloc_node_~ptr~0#1.base|)) |c_#length|))) is different from true [2023-11-23 15:32:42,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:32:42,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:32:42,288 INFO L349 Elim1Store]: treesize reduction 37, result has 19.6 percent of original size [2023-11-23 15:32:42,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 24 treesize of output 29 [2023-11-23 15:32:42,358 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-23 15:32:42,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 15:32:42,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:32:42,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:32:42,417 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-23 15:32:42,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 17 [2023-11-23 15:32:42,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-23 15:32:42,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:32:42,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-23 15:32:42,487 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-23 15:32:42,487 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:32:42,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54594800] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:32:42,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:32:42,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 13 [2023-11-23 15:32:42,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393434521] [2023-11-23 15:32:42,582 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 15:32:42,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-23 15:32:42,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:32:42,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-23 15:32:42,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=184, Unknown=1, NotChecked=28, Total=272 [2023-11-23 15:32:42,584 INFO L87 Difference]: Start difference. First operand 186 states and 209 transitions. Second operand has 15 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-23 15:32:43,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:32:43,184 INFO L93 Difference]: Finished difference Result 185 states and 208 transitions. [2023-11-23 15:32:43,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 15:32:43,184 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 38 [2023-11-23 15:32:43,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:32:43,185 INFO L225 Difference]: With dead ends: 185 [2023-11-23 15:32:43,185 INFO L226 Difference]: Without dead ends: 185 [2023-11-23 15:32:43,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=206, Unknown=1, NotChecked=30, Total=306 [2023-11-23 15:32:43,186 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 69 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 194 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 15:32:43,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 487 Invalid, 959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 750 Invalid, 0 Unknown, 194 Unchecked, 0.5s Time] [2023-11-23 15:32:43,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2023-11-23 15:32:43,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 180. [2023-11-23 15:32:43,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 97 states have (on average 1.8041237113402062) internal successors, (175), 166 states have internal predecessors, (175), 17 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-23 15:32:43,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 201 transitions. [2023-11-23 15:32:43,192 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 201 transitions. Word has length 38 [2023-11-23 15:32:43,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:32:43,194 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 201 transitions. [2023-11-23 15:32:43,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-23 15:32:43,194 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 201 transitions. [2023-11-23 15:32:43,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-23 15:32:43,196 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:32:43,197 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:32:43,218 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-23 15:32:43,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:32:43,419 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2023-11-23 15:32:43,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:32:43,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1493627192, now seen corresponding path program 1 times [2023-11-23 15:32:43,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:32:43,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101616688] [2023-11-23 15:32:43,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:32:43,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:32:43,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:32:43,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:32:43,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:32:43,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 15:32:43,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:32:43,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 15:32:43,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:32:43,775 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-23 15:32:43,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:32:43,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101616688] [2023-11-23 15:32:43,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101616688] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:32:43,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:32:43,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 15:32:43,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942138186] [2023-11-23 15:32:43,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:32:43,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 15:32:43,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:32:43,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 15:32:43,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-23 15:32:43,779 INFO L87 Difference]: Start difference. First operand 180 states and 201 transitions. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 15:32:44,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:32:44,261 INFO L93 Difference]: Finished difference Result 184 states and 206 transitions. [2023-11-23 15:32:44,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 15:32:44,261 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 41 [2023-11-23 15:32:44,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:32:44,262 INFO L225 Difference]: With dead ends: 184 [2023-11-23 15:32:44,263 INFO L226 Difference]: Without dead ends: 184 [2023-11-23 15:32:44,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 15:32:44,263 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 164 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 15:32:44,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 355 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 15:32:44,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2023-11-23 15:32:44,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 173. [2023-11-23 15:32:44,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 97 states have (on average 1.731958762886598) internal successors, (168), 159 states have internal predecessors, (168), 17 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-23 15:32:44,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 194 transitions. [2023-11-23 15:32:44,268 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 194 transitions. Word has length 41 [2023-11-23 15:32:44,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:32:44,268 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 194 transitions. [2023-11-23 15:32:44,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 15:32:44,268 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 194 transitions. [2023-11-23 15:32:44,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-23 15:32:44,268 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:32:44,269 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:32:44,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-23 15:32:44,269 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2023-11-23 15:32:44,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:32:44,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1493627191, now seen corresponding path program 1 times [2023-11-23 15:32:44,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:32:44,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626981579] [2023-11-23 15:32:44,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:32:44,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:32:44,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:32:44,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:32:44,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:32:44,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 15:32:44,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:32:44,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 15:32:44,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:32:44,592 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-23 15:32:44,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:32:44,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626981579] [2023-11-23 15:32:44,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626981579] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:32:44,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:32:44,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 15:32:44,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50602148] [2023-11-23 15:32:44,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:32:44,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 15:32:44,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:32:44,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 15:32:44,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-23 15:32:44,595 INFO L87 Difference]: Start difference. First operand 173 states and 194 transitions. Second operand has 8 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 15:32:45,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:32:45,155 INFO L93 Difference]: Finished difference Result 295 states and 336 transitions. [2023-11-23 15:32:45,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 15:32:45,155 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 41 [2023-11-23 15:32:45,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:32:45,157 INFO L225 Difference]: With dead ends: 295 [2023-11-23 15:32:45,157 INFO L226 Difference]: Without dead ends: 295 [2023-11-23 15:32:45,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-23 15:32:45,157 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 168 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 15:32:45,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 297 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 15:32:45,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2023-11-23 15:32:45,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 226. [2023-11-23 15:32:45,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 144 states have (on average 1.7569444444444444) internal successors, (253), 206 states have internal predecessors, (253), 23 states have call successors, (23), 4 states have call predecessors, (23), 3 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-23 15:32:45,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 291 transitions. [2023-11-23 15:32:45,164 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 291 transitions. Word has length 41 [2023-11-23 15:32:45,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:32:45,165 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 291 transitions. [2023-11-23 15:32:45,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 15:32:45,165 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 291 transitions. [2023-11-23 15:32:45,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-23 15:32:45,166 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:32:45,166 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:32:45,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-23 15:32:45,167 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2023-11-23 15:32:45,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:32:45,167 INFO L85 PathProgramCache]: Analyzing trace with hash 942197533, now seen corresponding path program 1 times [2023-11-23 15:32:45,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:32:45,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150547804] [2023-11-23 15:32:45,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:32:45,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:32:45,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:32:45,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:32:45,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:32:45,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 15:32:45,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:32:45,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 15:32:45,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:32:45,622 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-23 15:32:45,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:32:45,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150547804] [2023-11-23 15:32:45,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150547804] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:32:45,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:32:45,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 15:32:45,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126619298] [2023-11-23 15:32:45,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:32:45,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 15:32:45,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:32:45,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 15:32:45,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-23 15:32:45,625 INFO L87 Difference]: Start difference. First operand 226 states and 291 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 15:32:46,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:32:46,046 INFO L93 Difference]: Finished difference Result 230 states and 290 transitions. [2023-11-23 15:32:46,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 15:32:46,046 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 42 [2023-11-23 15:32:46,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:32:46,048 INFO L225 Difference]: With dead ends: 230 [2023-11-23 15:32:46,048 INFO L226 Difference]: Without dead ends: 230 [2023-11-23 15:32:46,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-23 15:32:46,048 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 164 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 15:32:46,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 288 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 15:32:46,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2023-11-23 15:32:46,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 219. [2023-11-23 15:32:46,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 144 states have (on average 1.6666666666666667) internal successors, (240), 199 states have internal predecessors, (240), 23 states have call successors, (23), 4 states have call predecessors, (23), 3 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-23 15:32:46,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 278 transitions. [2023-11-23 15:32:46,054 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 278 transitions. Word has length 42 [2023-11-23 15:32:46,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:32:46,054 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 278 transitions. [2023-11-23 15:32:46,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 15:32:46,054 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 278 transitions. [2023-11-23 15:32:46,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-23 15:32:46,055 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:32:46,055 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:32:46,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-23 15:32:46,056 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2023-11-23 15:32:46,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:32:46,056 INFO L85 PathProgramCache]: Analyzing trace with hash 942197534, now seen corresponding path program 1 times [2023-11-23 15:32:46,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:32:46,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747833015] [2023-11-23 15:32:46,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:32:46,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:32:46,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:32:46,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:32:46,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:32:46,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 15:32:46,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:32:46,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 15:32:46,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:32:46,607 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-23 15:32:46,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:32:46,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747833015] [2023-11-23 15:32:46,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747833015] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:32:46,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:32:46,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 15:32:46,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245202334] [2023-11-23 15:32:46,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:32:46,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 15:32:46,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:32:46,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 15:32:46,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-23 15:32:46,610 INFO L87 Difference]: Start difference. First operand 219 states and 278 transitions. Second operand has 10 states, 7 states have (on average 4.142857142857143) internal successors, (29), 9 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 15:32:47,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:32:47,153 INFO L93 Difference]: Finished difference Result 225 states and 281 transitions. [2023-11-23 15:32:47,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 15:32:47,154 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 4.142857142857143) internal successors, (29), 9 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42 [2023-11-23 15:32:47,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:32:47,155 INFO L225 Difference]: With dead ends: 225 [2023-11-23 15:32:47,155 INFO L226 Difference]: Without dead ends: 225 [2023-11-23 15:32:47,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-11-23 15:32:47,156 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 165 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 15:32:47,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 231 Invalid, 799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 773 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 15:32:47,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2023-11-23 15:32:47,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 212. [2023-11-23 15:32:47,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 144 states have (on average 1.5763888888888888) internal successors, (227), 192 states have internal predecessors, (227), 23 states have call successors, (23), 4 states have call predecessors, (23), 3 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-23 15:32:47,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 265 transitions. [2023-11-23 15:32:47,162 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 265 transitions. Word has length 42 [2023-11-23 15:32:47,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:32:47,162 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 265 transitions. [2023-11-23 15:32:47,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 4.142857142857143) internal successors, (29), 9 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 15:32:47,162 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 265 transitions. [2023-11-23 15:32:47,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-23 15:32:47,163 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:32:47,163 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:32:47,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-23 15:32:47,163 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2023-11-23 15:32:47,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:32:47,163 INFO L85 PathProgramCache]: Analyzing trace with hash 617275485, now seen corresponding path program 1 times [2023-11-23 15:32:47,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:32:47,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135695739] [2023-11-23 15:32:47,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:32:47,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:32:47,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:32:47,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:32:47,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:32:47,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 15:32:47,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:32:47,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 15:32:47,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:32:48,247 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 15:32:48,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:32:48,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135695739] [2023-11-23 15:32:48,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135695739] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:32:48,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333616088] [2023-11-23 15:32:48,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:32:48,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:32:48,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:32:48,250 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:32:48,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 15:32:48,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:32:48,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 73 conjunts are in the unsatisfiable core [2023-11-23 15:32:48,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:32:48,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 15:32:48,866 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-11-23 15:32:48,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 19 [2023-11-23 15:32:48,926 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-23 15:32:48,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 8 [2023-11-23 15:32:48,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-23 15:32:51,910 INFO L349 Elim1Store]: treesize reduction 211, result has 17.9 percent of original size [2023-11-23 15:32:51,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 116 treesize of output 205 [2023-11-23 15:32:52,016 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 15:32:52,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 107 [2023-11-23 15:32:53,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-11-23 15:32:53,213 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-23 15:32:53,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 8 [2023-11-23 15:32:53,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:32:53,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:32:53,911 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 15:32:54,040 INFO L349 Elim1Store]: treesize reduction 344, result has 1.4 percent of original size [2023-11-23 15:32:54,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 17 case distinctions, treesize of input 80 treesize of output 59 [2023-11-23 15:32:54,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:32:54,399 INFO L349 Elim1Store]: treesize reduction 35, result has 2.8 percent of original size [2023-11-23 15:32:54,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 11 [2023-11-23 15:32:54,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 15:32:54,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2023-11-23 15:32:54,729 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 15:32:54,729 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:32:54,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-23 15:32:55,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333616088] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:32:55,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 15:32:55,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 23] total 33 [2023-11-23 15:32:55,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17837794] [2023-11-23 15:32:55,239 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 15:32:55,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-23 15:32:55,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:32:55,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-23 15:32:55,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1075, Unknown=0, NotChecked=0, Total=1190 [2023-11-23 15:32:55,241 INFO L87 Difference]: Start difference. First operand 212 states and 265 transitions. Second operand has 33 states, 27 states have (on average 2.5185185185185186) internal successors, (68), 30 states have internal predecessors, (68), 7 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-23 15:32:57,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 15:33:00,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 15:33:03,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 15:33:08,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 15:33:11,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 15:33:14,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 15:33:14,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:33:14,317 INFO L93 Difference]: Finished difference Result 347 states and 435 transitions. [2023-11-23 15:33:14,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-23 15:33:14,317 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 27 states have (on average 2.5185185185185186) internal successors, (68), 30 states have internal predecessors, (68), 7 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 49 [2023-11-23 15:33:14,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:33:14,319 INFO L225 Difference]: With dead ends: 347 [2023-11-23 15:33:14,319 INFO L226 Difference]: Without dead ends: 347 [2023-11-23 15:33:14,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=246, Invalid=2106, Unknown=0, NotChecked=0, Total=2352 [2023-11-23 15:33:14,321 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 524 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 1983 mSolverCounterSat, 86 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 2075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1983 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.6s IncrementalHoareTripleChecker+Time [2023-11-23 15:33:14,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [524 Valid, 884 Invalid, 2075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1983 Invalid, 6 Unknown, 0 Unchecked, 17.6s Time] [2023-11-23 15:33:14,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2023-11-23 15:33:14,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 224. [2023-11-23 15:33:14,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 155 states have (on average 1.5806451612903225) internal successors, (245), 203 states have internal predecessors, (245), 23 states have call successors, (23), 5 states have call predecessors, (23), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-23 15:33:14,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 283 transitions. [2023-11-23 15:33:14,328 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 283 transitions. Word has length 49 [2023-11-23 15:33:14,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:33:14,328 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 283 transitions. [2023-11-23 15:33:14,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 27 states have (on average 2.5185185185185186) internal successors, (68), 30 states have internal predecessors, (68), 7 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-23 15:33:14,329 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 283 transitions. [2023-11-23 15:33:14,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-23 15:33:14,329 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:33:14,329 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:33:14,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 15:33:14,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-23 15:33:14,544 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2023-11-23 15:33:14,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:33:14,545 INFO L85 PathProgramCache]: Analyzing trace with hash 606288536, now seen corresponding path program 1 times [2023-11-23 15:33:14,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:33:14,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228976442] [2023-11-23 15:33:14,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:33:14,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:33:14,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:33:15,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:33:15,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:33:16,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 15:33:16,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:33:16,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 15:33:16,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:33:17,483 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 15:33:17,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:33:17,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228976442] [2023-11-23 15:33:17,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228976442] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:33:17,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820864534] [2023-11-23 15:33:17,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:33:17,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:33:17,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:33:17,485 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:33:17,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 15:33:17,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:33:17,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 72 conjunts are in the unsatisfiable core [2023-11-23 15:33:17,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:33:18,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 15:33:18,858 WARN L876 $PredicateComparison]: unable to prove that (exists ((|chain_node_~ppnode#1.offset| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_chain_node_#in~ppnode#1.base|) |chain_node_~ppnode#1.offset|))) (and (= (select |c_old(#valid)| .cse0) 0) (= |c_#valid| (store |c_old(#valid)| .cse0 1)) (<= |chain_node_~ppnode#1.offset| |c_chain_node_#in~ppnode#1.offset|) (<= 0 |chain_node_~ppnode#1.offset|)))) is different from true [2023-11-23 15:33:18,925 INFO L349 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2023-11-23 15:33:18,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 29 [2023-11-23 15:33:19,488 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 15:33:19,521 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-11-23 15:33:19,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 24 [2023-11-23 15:33:19,675 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-23 15:33:19,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 13 [2023-11-23 15:33:47,688 INFO L349 Elim1Store]: treesize reduction 211, result has 17.9 percent of original size [2023-11-23 15:33:47,689 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 149 treesize of output 236 [2023-11-23 15:33:47,852 INFO L224 Elim1Store]: Index analysis took 131 ms [2023-11-23 15:33:49,304 INFO L349 Elim1Store]: treesize reduction 272, result has 23.4 percent of original size [2023-11-23 15:33:49,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 98 treesize of output 213 [2023-11-23 15:33:55,565 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2023-11-23 15:34:01,535 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 15:34:01,543 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-23 15:34:01,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 24 [2023-11-23 15:34:02,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:34:02,333 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 15:34:02,421 INFO L349 Elim1Store]: treesize reduction 33, result has 2.9 percent of original size [2023-11-23 15:34:02,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 31 [2023-11-23 15:34:02,617 INFO L224 Elim1Store]: Index analysis took 142 ms [2023-11-23 15:34:02,834 INFO L349 Elim1Store]: treesize reduction 64, result has 11.1 percent of original size [2023-11-23 15:34:02,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 41 [2023-11-23 15:34:03,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:34:04,001 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 15:34:04,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:34:04,072 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-23 15:34:04,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 32 [2023-11-23 15:34:04,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:34:04,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:34:04,658 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 15:34:04,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 24 [2023-11-23 15:34:05,024 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 15:34:05,041 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 15:34:05,048 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 15:34:05,185 INFO L349 Elim1Store]: treesize reduction 25, result has 24.2 percent of original size [2023-11-23 15:34:05,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 35 [2023-11-23 15:34:05,411 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 15:34:05,412 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 15:34:05,412 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 15:34:05,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 24 [2023-11-23 15:34:06,546 INFO L224 Elim1Store]: Index analysis took 144 ms [2023-11-23 15:34:06,700 INFO L349 Elim1Store]: treesize reduction 49, result has 9.3 percent of original size [2023-11-23 15:34:06,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 32 [2023-11-23 15:34:39,718 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-23 15:34:39,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 5096 treesize of output 5076 [2023-11-23 15:34:54,361 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 15:34:54,453 INFO L349 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2023-11-23 15:34:54,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 18 [2023-11-23 15:34:55,269 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 15:34:55,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2023-11-23 15:34:55,398 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 15:34:55,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2023-11-23 15:34:56,004 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 15:34:56,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2023-11-23 15:34:57,136 INFO L349 Elim1Store]: treesize reduction 44, result has 37.1 percent of original size [2023-11-23 15:34:57,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 37 [2023-11-23 15:34:57,875 INFO L349 Elim1Store]: treesize reduction 44, result has 37.1 percent of original size [2023-11-23 15:34:57,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 37 [2023-11-23 15:34:58,935 INFO L349 Elim1Store]: treesize reduction 61, result has 12.9 percent of original size [2023-11-23 15:34:58,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 718 treesize of output 694 [2023-11-23 15:35:00,727 INFO L349 Elim1Store]: treesize reduction 44, result has 37.1 percent of original size [2023-11-23 15:35:00,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 37 [2023-11-23 15:35:01,876 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 15:35:03,244 INFO L349 Elim1Store]: treesize reduction 84, result has 26.3 percent of original size [2023-11-23 15:35:03,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 912 treesize of output 914 [2023-11-23 15:35:08,356 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 15:35:09,359 INFO L349 Elim1Store]: treesize reduction 52, result has 29.7 percent of original size [2023-11-23 15:35:09,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 560 treesize of output 562 [2023-11-23 15:35:14,060 INFO L349 Elim1Store]: treesize reduction 45, result has 10.0 percent of original size [2023-11-23 15:35:14,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 686 treesize of output 662 [2023-11-23 15:35:15,991 INFO L349 Elim1Store]: treesize reduction 32, result has 36.0 percent of original size [2023-11-23 15:35:15,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 31 treesize of output 29 [2023-11-23 15:35:19,931 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 15:35:19,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2023-11-23 15:35:20,590 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 15:35:20,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2023-11-23 15:35:20,771 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 15:35:20,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2023-11-23 15:35:24,927 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 15:35:25,181 INFO L349 Elim1Store]: treesize reduction 56, result has 16.4 percent of original size [2023-11-23 15:35:25,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 158 treesize of output 149 [2023-11-23 15:36:36,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:36,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:36,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:36,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:36,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 16 [2023-11-23 15:36:36,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:36,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:36,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:36,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:36,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 28 [2023-11-23 15:36:36,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:36,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:36,981 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 59 [2023-11-23 15:36:37,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:37,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:37,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 42 [2023-11-23 15:36:37,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:37,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:37,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:37,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:37,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 16 [2023-11-23 15:36:37,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:37,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:37,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:37,834 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-23 15:36:37,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 16 [2023-11-23 15:36:37,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:37,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:37,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:38,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:38,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:38,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 16 [2023-11-23 15:36:38,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:38,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:38,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:38,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 47 [2023-11-23 15:36:38,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:38,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:38,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:38,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:38,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:38,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 16 [2023-11-23 15:36:38,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:38,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:38,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 16 [2023-11-23 15:36:38,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:38,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:38,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:38,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 28 [2023-11-23 15:36:38,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:38,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:38,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:38,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 16 [2023-11-23 15:36:39,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:39,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:39,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:39,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 11 [2023-11-23 15:36:39,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:39,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:39,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:39,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:39,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 16 [2023-11-23 15:36:39,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:39,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:39,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:39,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 11 [2023-11-23 15:36:39,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:39,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:39,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:39,605 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-23 15:36:39,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 16 [2023-11-23 15:36:39,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:39,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:39,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:39,811 INFO L349 Elim1Store]: treesize reduction 35, result has 2.8 percent of original size [2023-11-23 15:36:39,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 74 treesize of output 47 [2023-11-23 15:36:40,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:40,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:40,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:40,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 11 [2023-11-23 15:36:40,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:40,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:40,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:40,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:40,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 47 [2023-11-23 15:36:40,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:40,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:40,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:40,613 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-23 15:36:40,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 16 [2023-11-23 15:36:40,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:40,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:40,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:40,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:40,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 9 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 16 [2023-11-23 15:36:41,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:41,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:41,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:41,138 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-23 15:36:41,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 16 [2023-11-23 15:36:41,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:41,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:41,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:41,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 28 [2023-11-23 15:36:41,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:41,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:41,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 15:36:41,504 INFO L349 Elim1Store]: treesize reduction 35, result has 2.8 percent of original size [2023-11-23 15:36:41,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 74 treesize of output 47 Killed by 15